Terminal or clamp



Nov. 6, 1934.

A. D. GOLDMAN TERMINAL OR CLAMP Filed Sept. 21. 1928 6 I 1 k\\\\\\\\\\ l Patented Nov. .6, 1934 1,979,382 TERMINAL on cLAMr Albert D. Goldman, Baltimore, Md.

Application SeptemberZl, 1928, Serial No. 307,416 1 Claim. (01. 173-959) This invention relates to improvements in terminals or clamps now commonly used with bat tery terminals or other objects.

An object of the invention is to provide a positive means of removal of said terminal or clamp from a battery post or any member, removal from. which has been made diflicult due to corrosion, rust or other chemical action.

A further object of my invention is the provil sion of a terminal or clamp simple in operation and economical in manufacture as well as positive in action.

Other objects of the invention will become apparent as the description proceeds, when read in [5 connection with the accompanying drawing.

The battery terminal or clamp now in use is secured'to a battery post or other object to which it is attached by means of the customary bolt I and nutfastening means. I have'found from actual experience that such fastening means is rendered ineffective and that release thereof made extremely diflicult because of the film formed between the bolt and the nut and between the post and terminals when corrosion occurs. This corrosion is brought about by the fumes or the acid escaping from the battery and covering the terminals and other parts causing the above described dimculties. This corrosive film may be in the form of 'rust when the clamp is used on an 80 object which is exposed to the elements. With this form offastening means itnearly always becomes necessary to use special tools to break the film and remove the clamp or terminal.

The device of my invention obviates the difiil5 culties above pointed out in that it is not neces Fig. 5 shows another form of 'my device.

Fig. 6 shows this'form .with the bolt removed Fig. '7 is a section of a part thereof. Fig. 8 shows a third form of my device and Fig.9 shows a detail of the bolt used with this form. r g

Figures 1 to 3, inclusive, illustrate the preferred form of my. invention. The body of my terminal or clamp is designatedlll and is provided with projections 12 and 13. The projection 12 has an.

' projection 13, as shown in Figs. 6, '7, and 8 and opening 14 therein, said opening being threaded. Aligned with this opening and positioned. in projection 13 is an opening 15. These openings are adapted to receive bolt 16'threaded from one end thereof to a recess 17 extending circumferentially of the bolt. A head 18 is formed on the other end of the bolt. An abutment collar 19 is provided which is adapted to seat in the recess 17. The form of my device shown in Figs. 5, 6, and

'7 is the same as that shown in Figs. 1, 2, and 3,

with the exception that a tapered groove 20 is provided in the body portion 10. This groove positioned in the projection 13 is placed at the inner end of the opening 15.

The third form of my device differs from the form shown in Figs. 1, 2, and 3 in that a hole 21 is formed thru the bolt in place of the circumferential groove 17. Also a pin 22 vis employed instead of the collar 19 said pin having a driving fit in the hole 21.

The operation of my device is as follows:

' Assuming that my device is positioned on'a battery, for example, with the body tightly embracing a post on said battery and it is desired to remove the device it is only necessary to turn the bolt by means of, any suitable tool in adiv rection to remove said bolt. The latter will be. withdrawn from the openings referred to until the collar 19 abuts the inner face of the projection 13. Further withdrawal of said bolt will-then be prevented. However, since the opening 14 is threaded, further rotation of the bolt will tend to force the projection 13. This movement is possible because of the inherent resiliency of the metal of which my device isformed. Such move- 90 ment, breaks the film of corrosion deposited between the body of the clamp andbinding post of the terminal.

When the tapered groove is provided in the 9 'ithe bolt is rotated as indicated above, the split ring or collar'23 will be forced into'said groove 20 the taper thereof tending to force the ends of said collar, said ends being originally spaced from each other similar to ring 19 in Fig. 4, closer together. This insures against the possibility of the collar 23 being forced out of the recess 1'7. A The taperedsurfaces of the collar 23 and groove 20 coact to force the spaced ends of the collar 23 together and-effect a spreading of the clamp when the bolt 16 is turned counter-clockwise.

The operation of the form shown inlFigs. '8 and 9 is the same as for the other forms of 'my device, the pin acting as the abutment member in the same manner as the collar operates. 1

opposed integral Jaw members having their ends normally spaced and formed with apertures, the aperture in one of said members being tapered toward the'inner face of the said jaw member, a clamping bolt loosely mounted in the aperture in the said last mentioned jaw member and threaded through the aperture in the other jaw member, aheadon the bolt engaging the outer face of said last mentioned jaws, said bolt having an annular groove therein near the inner face of the last named jaw member, a split ring member disposed in said groove and having an inclined exterior surface coacting with the tapered aperture in said last mentioned jaw member, said ring member being movable with said bolt for effecting sliding engagement between the tapered face of said jaw member and the inclined exterior surface of said ring member whereby said jaw members may be spread for removing the clamp from a storage battery post.

ALBERT D. GOLDMAN. 

